Remove unused bindings from the React private interface (#58455)

Summary:
Pull Request resolved: #58455

`react-native/react-private-interface` still exposed a number of values that no version of the renderer reads anymore. Checking every binding against the whole of `Libraries/Renderer` (the Fabric bundles and the shims) shows that `ExceptionsManager`, `Platform`, `RCTEventEmitter`, `TextInputState`, `deepDiffer`, `flattenStyle`, `legacySendAccessibilityEvent` and `CustomEvent` have no reference left — most of them were only ever needed by the legacy renderer bundles, which no longer exist.

Remove those getters, along with the `import typeof` declarations that became unused (including the `DangerouslyImpreciseStyleProp` type that only `flattenStyle` needed) and the two `TODO` comments attached to `deepDiffer` and `flattenStyle`. The modules themselves are untouched and stay reachable through their normal entry points. `react-private-interface.js.flow` is updated to match.

Changelog: [Internal]

Reviewed By: christophpurrer

Differential Revision: D119500025

Author: rubennorte

packages/react-native/src/react-private-interface.js

@@ -21,12 +21,8 @@
 // ----------------------------------------------------------------------------
 
 import typeof BatchedBridge from '../Libraries/BatchedBridge/BatchedBridge';
-import typeof legacySendAccessibilityEvent from '../Libraries/Components/AccessibilityInfo/legacySendAccessibilityEvent';
-import typeof TextInputState from '../Libraries/Components/TextInput/TextInputState';
-import typeof ExceptionsManager from '../Libraries/Core/ExceptionsManager';
 import typeof RawEventEmitter from '../Libraries/Core/RawEventEmitter';
 import typeof ReactFiberErrorDialog from '../Libraries/Core/ReactFiberErrorDialog';
-import typeof RCTEventEmitter from '../Libraries/EventEmitter/RCTEventEmitter';
 import type {Spec as FabricUIManager} from '../Libraries/ReactNative/FabricUIManager';
 import typeof {
   createPublicInstance,
@@ -41,14 +37,9 @@ import typeof {
   diff as diffAttributePayloads,
 } from '../Libraries/ReactNative/ReactFabricPublicInstance/ReactNativeAttributePayload';
 import typeof * as ReactNativeViewConfigRegistry from '../Libraries/Renderer/shims/ReactNativeViewConfigRegistry';
-import typeof flattenStyle from '../Libraries/StyleSheet/flattenStyle';
-import type {DangerouslyImpreciseStyleProp} from '../Libraries/StyleSheet/StyleSheet';
 import typeof deepFreezeAndThrowOnMutationInDev from '../Libraries/Utilities/deepFreezeAndThrowOnMutationInDev';
-import typeof deepDiffer from '../Libraries/Utilities/differ/deepDiffer';
-import typeof Platform from '../Libraries/Utilities/Platform';
 import typeof * as ReactNativeFeatureFlags from './private/featureflags/ReactNativeFeatureFlags';
 import typeof dispatchNativeEvent from './private/renderer/events/dispatchNativeEvent';
-import typeof CustomEvent from './private/webapis/dom/events/CustomEvent';
 
 export type {PublicRootInstance} from '../Libraries/ReactNative/ReactFabricPublicInstance/ReactFabricPublicInstance';
 export type PublicTextInstance = ReturnType<createPublicTextInstance>;
@@ -59,56 +50,27 @@ module.exports = {
   get BatchedBridge(): BatchedBridge {
     return require('../Libraries/BatchedBridge/BatchedBridge').default;
   },
-  get ExceptionsManager(): ExceptionsManager {
-    return require('../Libraries/Core/ExceptionsManager').default;
-  },
-  get Platform(): Platform {
-    return require('../Libraries/Utilities/Platform').default;
-  },
-  get RCTEventEmitter(): RCTEventEmitter {
-    return require('../Libraries/EventEmitter/RCTEventEmitter').default;
-  },
   get ReactNativeFeatureFlags(): ReactNativeFeatureFlags {
     return require('./private/featureflags/ReactNativeFeatureFlags');
   },
   get ReactNativeViewConfigRegistry(): ReactNativeViewConfigRegistry {
     return require('../Libraries/Renderer/shims/ReactNativeViewConfigRegistry');
   },
-  get TextInputState(): TextInputState {
-    return require('../Libraries/Components/TextInput/TextInputState').default;
-  },
   get fabricUIManager(): ?FabricUIManager {
     return require('../Libraries/ReactNative/FabricUIManager').getFabricUIManager();
   },
-  // TODO: Remove when React has migrated to `createAttributePayload` and `diffAttributePayloads`
-  get deepDiffer(): deepDiffer {
-    return require('../Libraries/Utilities/differ/deepDiffer').default;
-  },
   get deepFreezeAndThrowOnMutationInDev(): deepFreezeAndThrowOnMutationInDev<
     {...} | Array<unknown>,
   > {
     return require('../Libraries/Utilities/deepFreezeAndThrowOnMutationInDev')
       .default;
   },
-  // TODO: Remove when React has migrated to `createAttributePayload` and `diffAttributePayloads`
-  get flattenStyle(): flattenStyle<DangerouslyImpreciseStyleProp> {
-    // $FlowFixMe[underconstrained-implicit-instantiation]
-    // $FlowFixMe[incompatible-type]
-    return require('../Libraries/StyleSheet/flattenStyle').default;
-  },
   get ReactFiberErrorDialog(): ReactFiberErrorDialog {
     return require('../Libraries/Core/ReactFiberErrorDialog').default;
   },
-  get legacySendAccessibilityEvent(): legacySendAccessibilityEvent {
-    return require('../Libraries/Components/AccessibilityInfo/legacySendAccessibilityEvent')
-      .default;
-  },
   get RawEventEmitter(): RawEventEmitter {
     return require('../Libraries/Core/RawEventEmitter').default;
   },
-  get CustomEvent(): CustomEvent {
-    return require('./private/webapis/dom/events/CustomEvent').default;
-  },
   get createAttributePayload(): createAttributePayload {
     return require('../Libraries/ReactNative/ReactFabricPublicInstance/ReactNativeAttributePayload')
       .create;

packages/react-native/src/react-private-interface.js.flow

@@ -21,20 +21,12 @@ export type {PublicRootInstance} from '../Libraries/ReactNative/ReactFabricPubli
 export type PublicTextInstance = ReturnType<createPublicTextInstanceT>;
 
 export {default as BatchedBridge} from '../Libraries/BatchedBridge/BatchedBridge';
-export {default as ExceptionsManager} from '../Libraries/Core/ExceptionsManager';
-export {default as Platform} from '../Libraries/Utilities/Platform';
-export {default as RCTEventEmitter} from '../Libraries/EventEmitter/RCTEventEmitter';
 export * as ReactNativeFeatureFlags from './private/featureflags/ReactNativeFeatureFlags';
 export * as ReactNativeViewConfigRegistry from '../Libraries/Renderer/shims/ReactNativeViewConfigRegistry';
-export {default as TextInputState} from '../Libraries/Components/TextInput/TextInputState';
 declare export const fabricUIManager: ?FabricUIManager;
-export {default as deepDiffer} from '../Libraries/Utilities/differ/deepDiffer';
 export {default as deepFreezeAndThrowOnMutationInDev} from '../Libraries/Utilities/deepFreezeAndThrowOnMutationInDev';
-export {default as flattenStyle} from '../Libraries/StyleSheet/flattenStyle';
 export {default as ReactFiberErrorDialog} from '../Libraries/Core/ReactFiberErrorDialog';
-export {default as legacySendAccessibilityEvent} from '../Libraries/Components/AccessibilityInfo/legacySendAccessibilityEvent';
 export {default as RawEventEmitter} from '../Libraries/Core/RawEventEmitter';
-export {default as CustomEvent} from './private/webapis/dom/events/CustomEvent';
 export {
   create as createAttributePayload,
   diff as diffAttributePayloads,